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Everything You Need to Know about VoIP
by Dennis Kennedy
June 2004

They may call it “Voice over IP,” “VoIP,” Internet telephony,” or “computer telephony,” but we think of it as “that way to make phone calls over the Internet for a lot less money.” With names like “Vonage” and “Skype” becoming part of the common language and frequent announcements about new VoIP services from the big phone companies, many individuals and businesses are considering VoIP as an option to POTS (Plain Old Telephone Service).

Does VoIP make sense for you or your law firm? You may well find yourself in a position where you have to investigate the issues and make the decision. Well, grab yourself an acronym dictionary (necessary for any foray into the telecom world) and use the following list of links to turn yourself into a VIP of VoIP.

The Basics

  • What is Internet Telephony? (http://www.webopedia.com/TERM/I/Internet_telephony.html) – The Webopedia is a good starting point for learning about VoIP. You can start with the definition and follow some of their collected links.
  • The Wikipedia – Voice Over IP (http://en.wikipedia.org/wiki/Voice_over_IP) – If you haven’t yet heard of or tried the Wikipedia, this subject gives you a good reason to try it. The idea of the Wikipedia is to create a volunteer, “open source” encyclopedia of topical knowledge. The Voice over IP section is both a good illustration and a great overview of VoIP.
  • Home of the Dumb Question: How Does Outbound VoIP Work? (http://www.hyperorg.com/blogger/mtarchive/002686.html) – Someone asks some the questions the rest of us want to ask, including how to say “VoIP.” The answer seems to be “voip as in void.”
  • Darwin Executive Guides – Voice over IP (http://guide.darwinmag.com/technology/communications/voip/index.html) – It’s hard to beat Darwin Magazine’s Executive Guides as a great place to get an executive summary of the technology and business issues on any subject they cover. The VoIP guide is no exception. With a quick read of this guide, people will marvel at your grasp of the subject.
  • Telecom Regulation and Voice Over IP (http://www.bitpipe.com/detail/RES/1078511693_323.html) – Level 3 and other commercial providers have made available their brief to the FCC. It provides a good high-level overview of VoIP and the relevant regulatory issues.

Delving into the Details

  • The CT Portal (http://www.computertelephony.org/) – CT means computer telephony. Their goal was “to make this one of the most useful CT resources on the web.” You’ll find links, case studies, white papers and news here. An excellent starting point for further research.
  • Ohio State’s Voice Over IP Resources (http://www.cse.ohio-state.edu/~jain/refs/ref_voip.htm) – For those with a deep interest, you cannot find anything much better than this list of resources and links maintained at Ohio State. It links papers, technical information and a long lit of other resources.
  • Texas Instruments’ Voice Over IP Overview (http://tinyurl.com/36vdm) – A good, short overview and many articles on a variety of VoIP topics.

For Serious Students

  • Internet2 VoIP Working Group (http://voip.internet2.edu/) – Are you seriously serious about VoIP? Well, here’s where you find the major players at work constructing standards and preparing the way for the future.
  • MIT’s Program on Internet and Telecoms Convergence (http://itel.mit.edu/) – If you are interested in policy and technical issues, this MIT site is a great resource. Check out the Research section for tons of information.
  • SIP FAQs (http://www.world-of-adsl.com/index.php?special=sip_faqs) – The world of telecom is definitely the world of acronyms. One that you will run into in connection with VoIP is SIP (Session Initiation Protocol). This set of Frequently Asked Questions will help you get up to speed on SIP. For even more details, see the SIP FAQ at http://www.egyed.com/faq/sip_faq.html.

Implementation Issues

Vonage, Skype, Hype and Current Developments

Armed with this list, you will be well on your way to becoming the go-to expert on VoIP in your firm, with all of the accolades and benefits that will bring. On the other hand, maybe it’s best if you pass this list on to someone else who might enjoy the frantic questions about why the phones and email are down at the same time.


Dennis Kennedy (dmk@denniskennedy.com) is a computer lawyer and legal technology consultant based in St. Louis, Missouri. He speaks and writes frequently on legal, technology and Internet topics and was named the 2001 TechnoLawyer of the Year by TechnoLawyer.com. His highly regarded web site at www.denniskennedy.com collects many of his articles and is the home of his blog.